Better iOS Build Script for Kotlin Multiplatform

build.gradle.kts

tasks {
    register("buildPackafeForDebug", org.jetbrains.kotlin.gradle.tasks.FatFrameworkTask::class) {
        baseName = "SharedCode"
        from(
            iosArm64().binaries.getFramework("SharedCode", "Debug"),
            iosX64().binaries.getFramework("SharedCode", "Debug")
        )
        destinationDir = buildDir.resolve("xcode-frameworks")
        group = "Universal framework"
        description = "Builds a universal (fat) debug framework"
        dependsOn("linkSharedCodeDebugFrameworkIosArm64")
        dependsOn("linkSharedCodeDebugFrameworkIosX64")
    }

    register("buildPackageForRelease", Sync::class) {
        group = "build"
        val sdkName = System.getenv("SDK_NAME") ?: "iphonesimulator"
        val targetName = "ios" + if (sdkName.startsWith("iphoneos")) "Arm64" else "X64"
        val framework = kotlin.targets.getByName<KotlinNativeTarget>(targetName).binaries.getFramework("Release")
        inputs.property("mode", "Release")
        dependsOn(framework.linkTask)
        val targetDir = File(buildDir, "xcode-frameworks")
        from({ framework.outputDirectory })
        into(targetDir)
    }

    register("universalFramework") {
        val mode = System.getenv("CONFIGURATION")
        if (mode == "Debug") {
            dependsOn("buildPackafeForDebug")
        } else {
            dependsOn("buildPackageForRelease")
        }
    }
}